Auxiliary fluid supply valve



May 27 .1952 c. B. P11-:RCE 2,598,598

AUXILIARY FLUID SUPPLY VALVE Filed July 11, 1945 A 2 SHEETS-SHEET 1 jltiornys May 27,1952 c. B. PIERCE Y 2,598,598

AUX'ILIARY FLUID SUPPLY VALVE Filed Juiy 11. 1945 2 SHEETS- SHEET 2` sa, QEQLLHJ 1@ 'l'- Patented May 27, 1952 AUXILIARY FLUID SUPPLY VALVE Clayton B. Pierce, vNew YorkN. Y., assignor to Emerol Manufacturing Co., New York, N. Y., a corporation of Illinois Application July 11, 1945, Serial No. 604,460

This invention relates to certain new and useful improvements in a valve for a system for supplying an auxiliary fluidto an internal combustion engine and is an improvement on the valve of the lubricating system disclosed in Patent 4 No. 1,883,110 issued to Vernon W; Thompson and Burt N. Pierce, October 13, 1932.

The main object of my invention is to provide means for controlling the injection of a fluid to the manifold of an internal combustion engine to a nicety by the difference in pressure within the manifold and the atmospheric pressure whereby a movable wall is provided which is normally in engagement with a valve which meters the uid injected into the cylinders of the engine.

Another object of my invention is to provide a supersensitive adjustment for the movable wall in respect to the valve whereby the movable wall can be adjusted to a nicety in order to control the injection of fluid.

A still further object of my invention is to provide a valve for a fluid injecting lsystem which operates in a manner whereby control of fluid can be controlled properly irrespective of the viscosity of the fluid passing through the system.

` A still further object of my invention is to provide in addition to the compound means for adjusting the movable wall additional means for limiting the movement of the movable wall in one direction.

A still further object of the invention is to provide a `device so constructed that it can be adjusted for maximum feeding While idling.

With these objects in view:

Fig. 1 is a diagram illustrating one manner of applying my invention to an internal combustion engine.

Fig. 2 is a vertical section through the housing constituting the injector.

Fig. 3 is a diagram illustrating another form of injector showing it applied directly to the manifold ofA an internal combustion engine so as to be affected directly by the engine temperature, and Y Y Fig. 4 is a vertical section` through the form of device shown in Fig. 3. v

In the embodiment of my invention as shown in Figs. 1 and v2 I have shown my injector applied to an internal combustion engine I having a manifold 2 to which is connected a charge forming device 3 of any of the well known constructions of carbureters now in use employing a throttle valve for controlling the supply of fuel mixture to the engine.

Arranged adjacent the engine is a tank 4 car- 2 Claims. (Cl. 137-153) lried by a support 5 saidv tank being adapted to contain a fluid of any kind which is to be fed to the engine in addition to the explosive charge. The particular kind of fluid used forms Ino* part of my invention as I am aware that various' kinds of uids and liquids of all kinds can beused without departing from' the spirit of my invention. The tank is preferably provided with a V:removable cover 6 and disposed on said cover is a housing I forming my injector for feeding auxiliary fluid to an internal combustion engine.

The housing 'l can be formed of any shape desired and has a pressure chamber 8 therein into which extends a conduit 9 having a strainer I0 which is disposed within thez'uid tank.y The pressure chamber is provided with an outlet conduit I I which is connected to the intake manifold of the internal combustion engine and the conduits 9 and II form a conduit which is in communication with the Huid tank at one end and the manifold at the other so that in reality the housing is disposed in said conduit and as the housing contains a valve through which the fluid must pass the uid is controlled by the different pressures, as will later be described.` The conduit 9 has as a continuation a stem having an open upper end into which is removablysecured a fitting having a valve seat I3. TheloWer end of the hollow tube I4 rests upon the tting and surrounds the valve seat. The tube or sleeve I4 is provided with outlets I5 through which the fluid passes and is caught by a drip pan I6 which has a drip spout I'I disposed between a'sight opening I8 formed in one of the walls of the housing, the glass forming the sight openingI being secured vagainst a gasket so as to form an Vairtight joint. Surrounding the sleeve I4 is a coil spring I9 which carries at its upper end a cap 20 in which a valve 2l is disposed'which cooperates with the valve seat I3 so that the passage of fluid will be controlled by the valve in respect to the seat.

The upper end of the housing is internally threaded into which is screwed a supporting sleeve B having an annular collar at its upper end which is milled so that it can be turned. Formed in the threaded portion is an annular groove the bottom wall of which is roughened and in which is disposed a packing 22 so that an air-tight joint is formed. This sleeve is also internally threaded into which is screwed an externally threaded sleeve 23 which also has an annular'groove with afroughened bottom carrying a packing 24 to form an air-tight joint between the two sleeves.

By forming the groove rough the packing is prevented from turning as the two sleeves are turned to adjust them in respect to the housing. The threads of these two sleeves are of different pitch so that by adjusting the two independently the upper sleeve carrying the movable wall, as will later be described, can be adjusted to a nicety The sleeve 23 iisgprovided with a head 25 having a diaphragm-chamber 26 formed by a cap 21 which is secured in position by turning the edge over as clearly shown at 28. Within the diajoint below the diaphragm andV while I Yhave shown a flexible diaphragm -I .wish it to -be clearly understood that my invention is not limited to any particular kind vof diaphragm as a movable Wall could be used so as to be moved by the difference in pressure between thefpressure' within the housing and the atmospheric pressure. As Tthe .atmospheric pressure is usually constant andfftheypressure'.withinvthe housing varies according fto the v.vacuumfin themanifold I` am able .hyfhaving this movable Wall or 'diaphragm difrectlyfincontact with the head of lthe :valve 2| toseliminate a'lotof diicultiesexisting in prior .types of valve actuatedfmeans throughfthe medi- .um .oiga movablewall which is Vinfturnfcontrolled bythevarious pressures.

In using the :compound yadjustment previously described.formedby-thetwo sleevesthreaded one withinthe other with dierent pitch threads the position ofthe. diaphragm .which controls the position of the-,needle valve can be adjusted to a nicetyso .that .the z,proper-amountfof .fiuid passing 1 'through the. devicenanbe. controlled. AIn Aaddition tothe compound lmeans I .employ lan' adjusting screw30 whichworksina ,threadedbore formed injthe cap 21 andisSurrQundedby acoilspring 3'I". This adjusting screw bears againstor is in the .path oftravelo'f'the movable wall sothatthe movement of the movable wall in one direction is `clint'rolled and as a 'thread of this'screw has a pitch which differs'fromlthe pitch of the threads of the'two sleeves V,forming the compound adjusting means -I am able -to' further controland regulatethe lpassage of iuid .passing to theengine.

Vlrorder-toprevent the upper sleeve 'fromturning easily 'I provide a spring detent .'32 which springsinto agroove formed in thehead to hold itin-adjusted-position and preventitfrom turning with `the supporting sleeve.

The Vhousing 1 is provided with'a-vent passage- -Way33` normally closed by a removable screw 34. This vent 'is lused Afor adjusting, Vby roperation of thefadjusting -screw Yilfthe amountofliquid feed at75% engine load. The vent is opened, by

removal of the screw, only while the engine is operating at idling speed. When-thev vent is opened, '.Whenthe'engine is atidle speed, vthe pres- `sure in :the device .corresponds to.y that which Y phragm chamber there is a diaphragm 29 secured Y therein over a packing so as to form an air-tight maintain a uniform now of fluid under all atmospheric conditions.

Disposed on a support 38 arranged adjacent the engine 31 is a tank 39 forming an auxiliary reservoir for the fluid to be injected into the engine. The tank is provided with a removable cover 4l) through which passes a conduit 4| provided with a strainer 4 l at its lower V`end Within the tank 39 which may contain a fluid of anykindj'the particular kind of fluid forming no part of my invention. The conduit 4l leads to the inlet 42 of a -housingforining my injector for feeding fluid directly into the manifold of the engine. "The 'housingtis .provided with a pressure chamvber'44` having an outlet conduit in the form of a threaded nipple-'45 screwed into a threaded bore formed in the-engine manifold 36 forming with the conduit 4I a passageway from the auxiliary reservoir to the engine with the injector disposed so that the fluid passing therethrough is affected directly by the temperature; of the 4engnefto maintain "the vfluid at said engine temperature, thereby maintaining a substantially 'uniform viscosity of the lluid. VThisfenabl'es theamountxof fluidfedto the'enginefto be substantially` uniform and controlled Yto :a `nicety. irrespective :of Athe viscosity ofthe iluid'within thedsank.

The inlet l42' terminatesv in astemxintofwhich is threaded a fitting 4G having a valve -seat=41. .The lower tend Vof atubular vielement148 restsl upon and is vsupported by a dripf-pan zwhichysurrounds thevalve seat `41 and is supported uponfthe end of the stem of Vtheiinlet 42. 1`The tubularvfelement 48 is provided with outlets'r49 through which the-fluid passes and is :caughtfbythe Adrip :pan which has a drip lspout* '5i disposed'behind a sightropening 5 2 "formed in one of'the Vwallsiof the housingsthe rglass forming the-sightnpeningibeing secured against a gasketso as .to'form'r an airtight joint. Surrounding the sleeve.f48":is.fa coil springl 53 which .carries at its upper end "a .cap 54inrwhich a valvei55 isidisposed .which cooperates With'the lvalveseat 41 4so :that therpassage of. fluid will be 'controlled'.by 'the :valve in-'respe'ct to the seat.

The upper end of :the housing .is 5internally threaded .into `.which is screwed a .supporting sleeve B havingsan annular collar atit'sfupper end which ismilled'so'that it canbe turned. Formed in the threaded portion is an annular 'groove Ithe bottom wall of which isroughened anrlinvwhich is disposedrapacking` 56` so that an air-tight joint is formed. This sleeve'isalsointernally'threaded into which is screwed an vexternally threaded sleeve 51which also has an annular groove with a roughened bottom carrying a ypacking :59 to form an air-tight joint between the `two=sleeves- By 'forming the lgroove rough the packing is*v prevented from turning therein yas, the two sleeves areturned to adjustthem in respect to 'theJhous-X ing. vThe'threads'ofthesetwo'sleeves areof different pitch so thatby vadjusting the two `inde-- pendently the upper sleeve carrying the movable wall, as will later be described, can be adjusted toa nicety. The-sleeve 51isprovided with ahead 60 having a diaphragm'chamber 16| .formed'by a cap `62 which is secured Vin position by turning the-edge of the headV over as clearly shown at 63. Ihe diaphragm chamber has a'diaphragm 64 secured therein over a-packing so asto form an air-tight joint below-the diaphragm.

Inlusing the compound adjustmentpreviously described formed by the vtwo sleeves Ithreaded' one within the other with diiferentpitch'threads. the position 'ofthe-diaphragmwhich controls the position of the needle valve can be adjusted to a nicety so that the proper amount of fluid passing through the device can be controlled. In addition to the compound means I employ an adjusting screw 65 which works in a threaded bore formed in the cap 62 and is surrounded by a coil spring 66. This adjusting screw bears against or is in the path of travel of the movable wall so that the movement of the movable wall in one direction is controlled and as a thread of this screw has a pitch which diifers from the pitch of the threads of the two sleeves forming the compound adjusting means I am able to further control and regulate the passage of fluid passing to the engine.

The head 60 of the sleeve 5'! is provided with a plurality of vertical grooves 61 like those shown in Figs. 7 and 2 into which extends a spring detent 68 carried by the housing to hold it from turning with the supporting sleeve.

The housing 43 is provided with a vent passageway B9 normally closed by a removable screw 70.

The purpose of this vent is the same as previously described in respect to vent passageway 33.

In both forms herein shown to obtain the proper adjustment for controlling the flow of iuid to the engine, the pressure chamber is provided with a calibrated vent closed by a screw, which when removed when the engine is at idling speed causes a change of pressure in the pressure chamber to what it would be at 75% engine load. In other words, I have provided a method of obtaining and adjusting the amount of fluid feed that will occur at 75% engine load while the engine is idling.

Although the present device differs structurally from the system disclosed in the hereinbefore referred to United States Letters Patent No. 1,883,110 the principle of operation is the same. As the speed of the engine increases by the opening ci the throttle the suction in the pressure chamber of the device is reduced and the exible diaphragm is moved upwardly by the tension of the coil spring which is imparted to the diaphragm through the needle valve. Obviously the needle valve moves upwardly thus increasing the size of the passageway through the inlet valve into the pressure chamber with the result that a greater quantity of liquid will be drawn from the supply tank into the pressure chamber and ow therefrom to the intake manifold of the engine. As the speed of the engine decreases the suction in the pressure chamber is increased thus pulling the diaphragm downwardly and this in turn moves the needle valve downwardly against the tension of the coil spring. The downwardly movement of the needle valve reduces the size of the inlet opening at the inlet valve seat thus reducing the quantity of liquid drawn from the tank 4 and reducing the quantity of liquid fed from the pressure chamber to the intake manifold of the engine. The amount of liquid supplied by the device can be controlled to a nicety, as has previously been described, through rotary movement of the outer and inner sleeves in respect to one another thus adjusting the position of the diaphragm in respect to the valve seat.

I claim:

1. A pressure responsive device of the character described comprising, a housing, an open-ended outer sleeve threadedly mounted in one end of the housing for adjustment into and out of the housing, an open-ended inner sleeve threadedly mounted in the outer sleeve for rotary adjustment into and out of the outer sleeve, a iiexible diaphragm carried by the inner sleeve intermediate the length thereof, a closure for the outer end of the inner sleeve, said diaphragm dividing the housing into two non-communicating chambers one of which is a pressure chamber, the opposite end of the housing being provided with an inlet including a hollow stem disposed interiorly of ie pressure chamber and having an open inner end provided with a valve seat, said stem being provided with an open-ended tubular extension having in its side wall an outlet passageway and communicating with the open upper end of the stem and with the pressure chamber, said stem extension serving as a guide for a needle valve which is reciprocably mounted therein for cooperation with the valve seat of the stem, resilient means holding said stem in engagement with the diaphragm, and the pressure chamber being provided with an outlet.

2. A pressure responsive device of the character described comprising, a housing, an open-ended outer sleeve threadedly mounted in one end of the housing for rotatable adjustment into and out of the housing and provided externally of the housing with means by which the sleeve may be rotated, an open-ended inner sleeve threadedly mounted in the outer sleeve for rotary adjustment into and out of the outer sleeve and provided externally of the housing with means by which it may be rotated, means for holding the outer sleeve against rotation during rotation of the inner sleeve, a flexible plate-like diaphragm carried by the inner sleeve intermediate the length thereof, a closure for the outer end of the inner sleeve, said diaphragm dividing the housing into two non-communicating chambers one of which is a pressure chamber, the pressure chamber being provided with an inlet adapted for connection with a source of fluid supply, a hollow stem in the pressure chamber constituting a continuation of said inlet and having an open upper end provided with a valve seat, a needle valve positioned between said valve seat and the diaphragm, an open-ended tubular element surrounding and constituting a guide for the valve and having an end supported on the inner end of the stem, a coil spring surrounding said guide and holding it in said position and engaging the valve and holding an end thereof in engagement with the diaphragm, said valve guide being provided with a passageway providing communication between the interior of the guide and the pressure chamber, and the pressure chamber being provided with an outlet.

CLAYTON B. PIERCE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 269,534 Orme Dec. 26, 1882 1,201,178 Harding Oct. 10, 1916' 1,228,157 Wyand May 29', 1917 1,883,110 Thompson et al. Oct. 18, 1932 1,883,847 Van Tuyl Oct. 18, 1932 1,991,722 Berray Feb. 19, 1935 l,998,761 I-Iueber Apr. 23, 1935 2,064,078 Pierce Dec. 15, 1936 2,104,355 Rupp Jan. 4, 1938 2,104,852 Crombie et al Jan. 11, 1938 2,187,998 Carpenter Jan. 23, 1940 2,318,157 Heiser May 4, 1943 2,469,038 Winkler May 3, 1949 

